The Internal Revenue Service may have found 6,400 emails from Lois Lerner, who oversaw the tax agency’s Exempt Organizations Unit, but the government agency has no plans to share.

Attorneys from the Department of Justice representing the IRS say the emails won’t be shared because the service is making sure that none of them are duplicates. Lerner is at the center of a scandal in which the tax agency denied special tax status to conservative groups. Her emails have been sought by members of Congress and conservative groups alike.

One of those groups, Judicial Watch, has been seeking emails as part of a Freedom of Information Act (FOIA) request filed two years ago. Originally, the IRS said the email trail was permanently lost because the computer drive that contained it crashed. However, the Treasury Department’s Inspector General for Tax Administration or TIGTA, was able to retrieve 6,400 emails which it has subsequently sent to the agency. It is these emails that the IRS wants to check for duplicates.